Rowboat motor



June 14,1927. H,632,444

A. P. KNAUBER ROWBOAT MOTOR Filed Jan. 11, 1926 3 Sheets-Sheet l INVEN TOR.

June .14, 1927.

A. P. KNAUBER ROWBIOAT MOTOR s Sheets-Sheet 2 Filed Jan. 11. 1926 Ill 1 NV EN TOR.

I Arrgvz s,

June 14, 192.7.

I 1,632,444 A. P. KNAUBER ROWBOAT MOTOR Filed Jan. 11. 1926 3 Sheets-Sheet 3 1 N VEN TOR.

BY I wam 44 ATFTZZ'EYJ. I

Patented 14,1927.

= UNITED fsTArEs TENT-or fice.

nownoAr moron;

Application filed January 11, 1926. Serial No. 80,589.

. This invention relates to improvements in row boat motors.

It is .one of the'objects of 'the present invention to provide a two cylinder row boat .motor having opposed air cooled cylindeps. A further object othe invention is to provide an air cooled motor having novel means for forcefully directing air onto and around the cylinders.- A further object of the invention is to provide a row boat motor which is pivotal with respect to the rear of the boat .to permit a movement of the motor in shallow. water so that the propeller will not be .in- 55 jured, therebeing means however for quickly manually locking themotor in'normal unpivotal osition. A further ject of the invention is to, provide an air cooled motor of the class .2 described in which the cylinders are encased by a housing to protect the same irom'rain and water.

A further object of the invention is to provide an air cooled row boat motor which is of very simple construction, is strong and durable, is efficient in operation, and is well adapted for the purposesset 'iorth.

' With the above and other objects in view the invention consists of the improved boat motor and its parts and combinations as set forth in the claims, and all equivalents thereof. I '][n the accompanying drawings in which the same reference characters lndicate the '35 same parts in all of the views:

Fig. 1 is a front view of the improved row boat motor, part being-broken away to show details of construction;

Fi 2 is an end view of the motor shown 4 attac ed'to the rear portion of a boat;

Fig. 3 is an enlarged detail view.'of one of the cam locking members for holding the motor in unpivotal position; I

"Fig. 4 is a sectional view taken on lin 4-4 of Fig. 5.;

Fi 5 1s an enlar ed lan view of the fiydlw eel, the crank andl e being omitted; an

Fig.6 is a fragmentary view or the end W portion of a boat show how the motor is attached thereto and the ockin means.

Referring now more particu arly to the .drawing it will appear that the im roved motor employs a pair of oppositely dlsposed cylinders 8 secured to opposite sides of the crank case 9, the cylinders being of the air cooled type with cooling fins 10. Extending vertically through the crankcase is a propeller shaft 11 carr ing a propeller (not shown) at its lower end The upper, end portion of the shaft has keyed thereto'a fly wheel 12 having a handle 13, by which means the motor is cranked" when starting. As shown particularly in Figs. 4 and 5 the fly wheel is formed with a plurality of radial downwardl blades 14. Thus, when the fly w eel is revolving said blades JWlll draw in air and direct it onto the cylinders to cool the same.

To protect the cylinders from rain and other water, a housin' 15 is provided. The

arrangement of said ousing is shown'particularly in Figs. 1 and 2 and thesame is flanged and open .at its upper end to accommodate' the fly wheel 12 but protectively encloses the cylinders and crank case.

Dependin from the cylinders area pair of arms 16 t rough the lower ends of w ichpivot bolts-17 extend, and pivotally mounted on-each bolt is a bracket member 18,. formed particularly as shown in Fig. 6 with turn bolts 19 for clampin the members to the stern of a boat 20. his arrangement permits a rocking or pivotal movement of the motor with res ect to the boat which is desirable in shal ow water to prevent injury to the propeller. However, in dee er water the motor should be rigidl locked in normal vertical position and to t at end the upper ortions of each of the bracket members are ormed with integral discs 21 havin cam faces 22 divided into uadrants, as. s own. Also pivotally mounted onthe bolts 19 are looking members 23, the inner faces of which 'are cam-like to engage the cam faces 22.

The handle portions 24 of the members 23 'are joined. by a U-bar 25 whereby the looking members may be operated simultan-.

eously. In the position shown in Fig. 1 with the shoulders of the cam faces abutting pivotal movement betweeen the brackets and lift on the bar 25 will move the members 23 to. cause a wedging action whereby pivotal movement is prevented and the motor is releasably locked in fixed position.

Due to the fact thatmany portions of the motor are of usual construction, only the novel features have here been described in;

detail.

From the foregoing description it will be seen that the improved .row boat motor is inclined motor is permitted. However, an upward of the air cooled type with a pair of opposed cylinders surrounded by a protective housing and fly wheel is utilized to force and circulate air about the cylinders. The motor is pivotal with respect to the boat when desired, and may be locked in rigid position for normal use. Also the motor is simple in construction and effectively combines novel and advantageous features.

What I claim as my invention is:

1. In a motor propeller for boats, the com bination of an engine, a pair of mounting brackets each pivotally connected with the engine and adapted for attachment to a boat, the pivotally mounted portions of said brackets having cam faces, and a manually operable locking member having complementary cam facesengaging said first-mentioned cam faces and movable to wedgingly engage the same to prevent movement between the engine and said brackets.

2. In a motor propeller for boats, the combination of an engine having a pair of de pending arms, a pivot bolt extending transversely through each of said arms, a mounting bracket carried by each bolt and adapted for attachment to a boat, the pivotally mounted portions of said brackets having cam faces, a lever pivotally mounted on each bolt adjacent said brackets, said levers having complementary cam faces and movable to wedgingly engage the first-mentioned cam faces to prevent movement between the engine and brackets, and a bar connecting said levers for manually, simultaneously operating the same.

3. In a motor propeller for boats, the combination of a crank case, a pair of oppositely disposed air cooled cylinders extending laterally therefrom, a propeller shaft extending transversely through the crank case, and fly wheel means at the upper end of the shaft to circulate air about the cylinders.

4- In a motor propeller for boats, the combination of a crank case, a pair of oppositely neaaaaa disposed air cooled cylinders extending laterally therefrom, a propeller shaft extending transversely through the crank case, a fly wheel at the upper end of the shaft, and a plurality of radial. downwardly inclined blades within said fly wheel to cause circulation of air about said cylinders.

In a motor propeller for boats, the combination of a crank case, a pair of oppositely disposed air cooled cylinders extending laterally therefrom, a propeller shaft extending transversely through the crank case, a fly wheel atthe upper end of the shaft. means within said fly wheel to cause circulation of air about the cylinders, and a protective housing enclosing the cylinders and crank case and open the top to accommodate the fly Wheel.

6. In a motor propeller for boats, the combination of a crank case, a pair of oppo sitely disposed air cooled cylinders extending laterally therefrom, a propeller shaft extending transversely through the crank case, a fly wheel at the upper end of the shaft and arranged to circulate air about the cylinders, said fly wheel having a plurality of radial, downwardly inclined blades, a protective housing enclosing the cylinders and crank case and open at the top to accommodate the fly wheel, a pair of arms depending from the cylinders, a pivot bolt extending transversely through each of said arms, a mounting bracket carried by each bolt and adaptedfor attachment to a boat.

"the pivotally mounted portions of said brackets having cam faces. a lever pivotally mounted on each bolt adjacent said brackets, said levers havingcomplementary cam faces and movable to \vedgingly engage the firstmentioned cam faces to prevent angular movement between the motor and boat, and a bar connecting said levers for manually, simultaneously operating the same.

In testimony whereof, I afflx my signature ALBERT P. KNAUBER. 

